[wisb] Re: Milwaukee gulls today 2/14
- From: "Peter A. Fissel" <pfissel@xxxxxxxxxxxxxxxx>
- To: Wisconsin Birding Network <wisbirdn@xxxxxxxxxxxxx>
- Date: Tue, 14 Feb 2012 16:29:15 -0600
A few of us had a GBB Gull like that at Sheboygan a couple of years ago
- everything fit, except the size (actually ever so slightly smaller
than a Herring Gull.) I finally looked at the size given in the Howell
and Dunn gull book, which listed a RANGE of 25"-32" - most field guides
seem to list an average or largest size (usually 30+" for Great
Black-backs.) We eventually decided it was likely a small female.
It's really easy to forget about normal size variations among
individuals, not to mention male/female dimorphism in birds other than
raptors. (Pectoral Sandpipers are a really good example of the latter -
males can be up to 50% larger than females, per one of my shorebird guides.)
Peter Fissel
Madison WI
On 2/14/2012 4:09 PM, Jym Mooney & Carol Lee Hopkins wrote:
> McKinley Marina held the usual large group of Herring Gulls with some
> Ring-billed Gulls this afternoon. There was also an adult Lesser
> Black-backed Gull, and a first winter Great Black-backed Gull. The last
> gave me fits, because it didn't seem large enough or to have a big enough
> bill, but looking at my photos when I got home I couldn't make it into
> anything else. Gulls = variety!
>
> Jym Mooney, Milwaukee
>
>
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